query ast file structures and essential interfaces

1 files changed, 35 insertions, 0 deletions

diff --git a/bsfs/query/validator.py b/bsfs/query/validator.py
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index 0000000..ac3789a
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+++ b/bsfs/query/validator.py
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+"""
+
+Part of the BlackStar filesystem (bsfs) module.
+A copy of the license is provided with the project.
+Author: Matthias Baumgartner, 2022
+"""
+# imports
+import typing
+
+# bsfs imports
+from bsfs import schema as bsc
+
+# inner-module imports
+from . import ast
+
+# exports
+__all__ : typing.Sequence[str] = (
+    'Filter',
+    )
+
+
+## code ##
+
+class Filter():
+
+    # schema to validate against.
+    schema: bsc.Schema
+
+    def __init__(self, schema: bsc.Schema):
+        self.schema = schema
+
+    def parse(self, node: ast.filter.FilterExpression):
+        raise NotImplementedError()
+
+## EOF ##